package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.SkuImagesEntity;
import com.atguigu.gulimall.product.entity.SpuInfoDescEntity;
import com.atguigu.gulimall.product.entity.SpuInfoEntity;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.atguigu.gulimall.product.vo.SpuSaveVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SkuInfoDao;
import com.atguigu.gulimall.product.entity.SkuInfoEntity;
import org.springframework.transaction.annotation.Transactional;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

	@Autowired
	SpuInfoDescService spuInfoDescService;

	@Autowired
	SkuImagesServiceImpl skuImagesService;

	@Autowired
	AttrGroupService attrGroupService;

	@Autowired
	SkuSaleAttrValueService skuSaleAttrValueService;



	@Override
	public PageUtils queryPage(Map<String, Object> params) {
		IPage<SkuInfoEntity> page = this.page(
				new Query<SkuInfoEntity>().getPage(params),
				new QueryWrapper<SkuInfoEntity>()
		);

		return new PageUtils(page);
	}

	@Override
	public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
		this.baseMapper.insert(skuInfoEntity);
	}

	@Override
	public PageUtils queryPageByCodition(Map<String, Object> params) {
		QueryWrapper<SkuInfoEntity> wrapper = new QueryWrapper<>();
		/**
		 * key:
		 * catalogId: 0
		 * brandId: 0
		 * min: 0
		 * max: 0
		 */
		String key = (String) params.get("key");
		if (!StringUtils.isEmpty(key)) {
			wrapper.and((w) -> {
				w.eq("sku_id", key).or().like("sku_name", key);
			});
		}

		String catalogId = (String) params.get("catalogId");
		if (!StringUtils.isEmpty(catalogId) && !"0".equalsIgnoreCase(catalogId)) {
			wrapper.eq("catalog_id", catalogId);
		}

		String brandId = (String) params.get("brandId");
		if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
			wrapper.eq("brand_id", brandId);
		}

		String min = (String) params.get("min");
		if (!StringUtils.isEmpty(min)) {
			wrapper.ge("price", min);
		}

		String max = (String) params.get("max");
		if (!StringUtils.isEmpty(max)) {
			try {

				BigDecimal bigDecimal = new BigDecimal(max);
				if (bigDecimal.compareTo(new BigDecimal("0")) == 1) {
					wrapper.le("price", max);
				}

			} catch (Exception e) {

			}
		}


		IPage<SkuInfoEntity> page = this.page(
				new Query<SkuInfoEntity>().getPage(params),
				wrapper
		);
		return new PageUtils(page);
	}

	@Autowired
	ThreadPoolExecutor executor;

	@Override
	public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
		SkuItemVo skuItemVo = new SkuItemVo();

		CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(() -> {
			//1、sku基本信息获取 pms_sku_info
			SkuInfoEntity info = getById(skuId);
			skuItemVo.setInfo(info);
			return info;
		}, executor);

		// Long spuId = info.getSpuId();
		// Long catalogId = info.getCatalogId();

		CompletableFuture<Void> saleAttrFuture = infoFuture.thenAcceptAsync((res) -> {
			//3、获取spu的销售属性组合。
			List<SkuItemVo.SkuItemSaleAttrVo> saleAttrVos =
					skuSaleAttrValueService.getSaleAttrsBySpuId(res.getSpuId());
			skuItemVo.setSaleAttr(saleAttrVos);
		}, executor);

		CompletableFuture<Void> descFutire = infoFuture.thenAcceptAsync((res) -> {
			//4、获取spu介绍
			SpuInfoDescEntity spuInfoDescEntity = spuInfoDescService.getById(res.getSpuId());
			skuItemVo.setDesp(spuInfoDescEntity);
		}, executor);

		CompletableFuture<Void> baseAttrFuture = infoFuture.thenAcceptAsync((res) -> {
			//5、获取spu的规格参数信息
			List<SkuItemVo.SpuItemAttrGroupVo> attrGroupVos =
					attrGroupService.getAttrGroupWithAttrsBySpuId(res.getSpuId(), res.getCatalogId());
			skuItemVo.setGroupAttrs(attrGroupVos);
		}, executor);


		//2、sku图片信息
		CompletableFuture<Void> imageFuture = CompletableFuture.runAsync(() -> {
			List<SkuImagesEntity> images = skuImagesService.getImagesBySkuId(skuId);
			skuItemVo.setImages(images);
		}, executor);

		//3、查询当前sku是否参与秒杀优惠

		//等待所有任务都完成
		CompletableFuture.allOf(saleAttrFuture,descFutire,baseAttrFuture,imageFuture).get();

		return skuItemVo;
	}

	@Override
	public List<SkuInfoEntity> getSkusBySpuId(Long spuId) {
		List<SkuInfoEntity> list = this.list(new QueryWrapper<SkuInfoEntity>().eq("spu_id",spuId));
		return list;
	}


}
